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What is the production process of welded pipe unit oil casing
Release time:
2022-06-03 12:30
Welded pipe unitThe application in daily production is very common, and the use of welded pipe units to produce oil casing has also become a trend, which is mainly inseparable from the advantages of welded pipe units. In general, the production of oil casing can be hot-rolled seamless steel pipe and welded pipe unit welding. However, the welding phenomenon of welded pipe unit is very common in daily life. Because the oil casing produced by welding will have welds, the problems of strength-toughness matching between base metal and weld, weld ash spot, weld groove corrosion and so on need to be solved.
The welded pipe unit should pay attention to the strength and toughness in the production of oil casing. The welded pipe unit with reduced thermal tension can be cooled by controlled cooling, which can not only improve the welding problem of the welded oil sleeve to a large extent, but also improve its strength and toughness. The chemical composition of the welding base metal, welding temperature, welding speed and other factors are the main factors affecting the gray spot of the weld. In order to avoid gray spots in the weld, the edge quality of the strip and the welding process must be strictly controlled. The method of heating and thermal tension reduction of the entire pipe before the heat treatment of the weld can be used to reduce and avoid the gray spot of the weld. The control of welding groove corrosion needs to be avoided by reducing the thermal tension.
In normal operation, the high-frequency welded pipe unit will always be damaged. How to properly maintain and prolong its service life in daily life is a problem that people are concerned about. In the process of use, we should strictly follow the operation procedure in the manual. Before the machine runs, we should check whether all parts of the machine can work normally and whether there are any faults. Only when the parts and indicator lights of the machine are normal can it be started and put into production, otherwise it will cause losses to the machine.
After checking the components of the high-frequency welded pipe unit, start the machine for operation. In the process of mechanical production, the stability of mechanical temperature and production conditions must be guaranteed. If the machine fails, we need to stop production in time and check which parts of the machine fail to avoid greater losses. The main faults include unstable mechanical operation and abnormal noise during operation. If there is a problem, it should be checked in time.
After the machine has been used for a period of time, pay attention to lubricating and cleaning the machine regularly to ensure its cleanliness. Only in this way can the machine work normally and be relatively light during use. The aging parts in the machine need to be replaced in time to ensure the normal operation of the machine. In addition, when the machine is not in use, the high-frequency welded pipe unit should be properly kept and not discarded at will.
Common maintenance methods for welded pipe units:
1. Do a good job in the inspection of the high-frequency pipe welding machine on weekdays, check whether the pipeline is normal, and truthfully record the mechanical condition of the solid-state high-frequency pipe welding machine. If it is found that the solid-state high-frequency pipe welding machine has future risks, it should be quickly overhauled to avoid affecting the following normal use.
2. The parts of the high-frequency welded pipe machine that need to be lubricated should be lubricated on time and lubricated with a special lubricant to prevent the welded pipe from rusting. Galvanizing is a good way to extend the service life of the welding machine. The surface of the steel pipe shall be pretreated before galvanizing. Pretreatment usually includes degreasing (degreasing is to remove oil and dirt outside the black tube to prevent the influence of immersion and pickling, daily alkali washing can be completed by burning or alkali washing), water washing, acid washing, water washing, etc.
Welded pipe unit
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